/*
 *混合器
 */

// 头像
@mixin avatar-img($width, $height) {
    width: $width;
    height: $height;
    border-radius: 50%;
    display: block;
    object-fit: cover;
    background: #e8e8e8;
}

// 居中
@mixin left-top-center {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
